node4.secure-shield.at has no CNAME records.
Question and response
Question
dig node4.secure-shield.at. NS
Answer
The response has no answer records.
Authority
secure-shield.at. 594 SOA ns1.abaton.at. christoph.jaeger.abaton.at. 2021120102 7200 3600 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0